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eshell: Expansion

 
 3 Expansion
 ***********
 
 Expansion in a command shell is somewhat like macro expansion in macro
 parsers (such as ‘cpp’ and ‘m4’), but in a command shell, they are less
 often used for constants, and usually for using variables and string
 manipulation.(1)  For example, ‘$var’ on a line expands to the value of
 the variable ‘var’ when the line is executed.  Expansions are usually
 passed as arguments, but may also be used as commands.(2)
 

Menu

 
· Dollars Expansion
· Globbing
 
    ---------- Footnotes ----------
 
    (1) Eshell has no string-manipulation expansions because the Elisp
 library already provides many functions for this.
 
    (2) E.g., entering just ‘$var’ at the prompt is equivalent to
 entering the value of ‘var’ at the prompt.
 

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